Despite being a relatively recent build, the Flock camera was running Android 8.1. This version of Android was released in 2017, and officially stopped getting support from Google in 2021 (see the Android end-of-life page for more info). And despite Google publishing security fixes for Android 8.1 until 2021, the Android patch level is 2018-06-05. This camera is missing Android security updates for the last eight years.
Are you able to provide greater detail?
Kali and metasploit are a complicated topic. For a general just how do these things work, below is a pretty good video. It might be hard to find instructions for how to leverage this against flock cameras, but people who are skilled in Kali and other security tools can get into almost anything
https://m.youtube.com/watch?v=cPNXqBofZGQ&pp=0gcJCYsCo7VqN5tD